Study on Multidrug-Resistant Acinetobacter baumannii and Biofilm Inhibition
Author Information
Author(s): Poonam Yadav, Sreska Shrestha, Deepak Basyal, Ananda Tiwari, Ranjit Sah, Anil Kumar Sah, Bishal Yadav, Mark Willcox, Shyam Kumar Mishra
Primary Institution: Tribhuvan University Teaching Hospital, Kathmandu, Nepal
Hypothesis
This study aimed to characterize MDR A. baumannii isolates for their biofilm-forming capabilities and the presence of common biofilm-related genes.
Conclusion
The study found that most A. baumannii clinical isolates were strong biofilm producers and that certain compounds, especially essential oils, were effective in inhibiting biofilm formation.
Supporting Evidence
- 195 out of 200 A. baumannii isolates were multidrug-resistant.
- 192 isolates were able to produce biofilms, with 83.1% classified as strong biofilm producers.
- Cinnamaldehyde was the most effective compound, inhibiting biofilm formation by 77.3%.
- 42.0% of isolates exhibited twitching motility and 66.2% exhibited surface-associated motility.
- Biofilm-related genes were detected in 90.0% of strains for csuE, 53.3% for ompA, 46.6% for bap, and 26.6% for blaPER−1.
Takeaway
This study looked at a type of bacteria that can resist many medicines and found ways to stop it from sticking together and forming a protective layer.
Methodology
The study involved isolating A. baumannii from clinical specimens, testing their antibiotic sensitivity, and assessing their biofilm production and motility.
Limitations
The study did not perform 16S rRNA sequencing for confirming species identification and did not investigate the activity of compounds against planktonic bacterial cells.
Participant Demographics
Isolates were obtained from inpatients at a tertiary care university hospital in Nepal.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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